/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#include "HardwareIndexBuffer.h"
#include "HardwareBufferManager.h"

namespace TinySG
{

//-----------------------------------------------------------------------------
HardwareIndexBuffer::HardwareIndexBuffer(IndexType idxType,
	size_t numIndexes, HardwareBuffer::Usage usage,
	bool useSystemMemory, bool useShadowBuffer)
	: HardwareBuffer(usage, useSystemMemory, useShadowBuffer), mIndexType(idxType), mNumIndexes(numIndexes)
{
	// Calculate the size of the indexes
	switch (mIndexType)
	{
	case IT_16BIT:
		mIndexSize = sizeof(unsigned short);
		break;
	case IT_32BIT:
		mIndexSize = sizeof(unsigned int);
		break;
	}
	mSizeInBytes = mIndexSize * mNumIndexes;

	// Create a shadow buffer if required
	if (mUseShadowBuffer)
	{
		mpShadowBuffer = new DefaultHardwareIndexBuffer(mIndexType,
			mNumIndexes, HardwareBuffer::HBU_DYNAMIC);
	}
}

//-----------------------------------------------------------------------------
HardwareIndexBuffer::~HardwareIndexBuffer()
{
	HardwareBufferManager* mgr = HardwareBufferManager::getSingletonPtr();
	if (mgr)
	{
		mgr->_notifyIndexBufferDestroyed(this);
	}

	if (mpShadowBuffer)
	{
		delete mpShadowBuffer;
	}
}
//-----------------------------------------------------------------------------
HardwareIndexBufferSharedPtr::HardwareIndexBufferSharedPtr(HardwareIndexBuffer* buf)
	: SharedPtr<HardwareIndexBuffer>(buf)
{

}

}

